Getting free drinks

A Scotsman and a Cardi met in Glasgow, both penniless, both thirsty.

The Scotsman had an idea for getting a free drink: "I know a barmaid in a pub near here who has got a very bad memory. If you get her involved in a conversation she can't remember whether you've paid or not. Let me try it on first."

The Scotsman went into the pub and duly got his free drink. Now it was the Cardi's turn to try.

The Cardi went over to the bar, ordered his pint and began to tell the barmaid all about life in Wales. Ten minutes later he drained his glass and said to the barmaid

"Well, it's been nice talking to you but I've got to be off now. What about my change?"